Improvement in railway car-brakes



l. S. ANDERSON. Railway-Car Bakes.

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UNITED STATES JOHN S. ANDERSON, OE ELINTVILLE, WISCONSIN.

IMPROVEMENT IN RAILWAY CAR-BRAKES.

Specification forming part of Letters Patent No. 139,627, dated June 3, 1873 appliraion fied January 25, 1873. Y

` Flintville, in the county ot' Brown and State of Wisconsin, have invented a new and valuable Improvement in CanBrakes; and I do Vhereby declare that the following is a full,

clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making a part ot' this specication, and to the letters and yiigures of reference marked thereon.

Figure 1 of the drawing is a representation Of a bottom view of my invention. Fig. 2 is a sectional view of the same.

The object ot' this invent-ion is to prevent the car to which it is applied from running o the track, which almost invariably happens while the train is going around a curve, and results from the tendency ofthe outside wheels to ride up over the rails, in consequence ot' the after more fully described.

In the accompanying drawing- A represents a bar which operates as the rubber or shoe ot' my improved automatic brake. It is bolted to the truck at a., so that the ends are immediately over the faces ot' the two wheels D D. Bolted to the under side of the floor of the car, immediately over the bar A, is a at metallic spring, B, whose ends are curved downward so as to rest upon ythe upper side of the bar, over the wheels. India-rubber springs G C are placed between the iioor F and the curved ends of the springs B to secure the proper degree of stiffness. All the wheels revolve independently ot' each other, the two wheels D D on each side being journaled in a frame, E, running longitudinally of the car,

and attached to a frame, H, which runs transversely ot the car, and is pivoted to the Hoor in the usual manner ot' securing trucks. K K are transverse bars secured to the under side ot' the tloor, and arranged, respectively, in front and in rear of the truck-frames H, serving the purpose ot' stops to prevent the trucks from turning too far. l

By thus arranging the wheels separately and independently ot'each other, instead otl having each pair attached to one axle, I gain the ad vantages which have been heretofore attributed to such an arrangement, and at the same time accomplish the object of this invention, as follows: The barsA being located over the wheels without touching them, the wheels revolve freely so long as they remain properly on the track; but as the space between the br and the face ofthe wheel is much less than the width of the ange of the wheel, as soon as the wheel D begins to ride up or climb the track its further revolution is prevented by its contact with the bnr, while the other wheels of the same truck continue their revolutions without restriction. As soon as the wheel D ceases its revolutionit loses its power as a lever and its tendency to raise itself and load over the track and the weight Ot' the car forces the wheel back into place upon the rail.

What I claim as my invention, and desire to secure by Letters Patent, is

In an automatic car-brake, thecombination of the independent wheels 1) D journaled to the frame E, the pivoted `truck-frame H, the transverse bars K K', the brake-har A, and the flat spring B, all constructed and arranged as described and operating in the manner set forth. y

In testimony that I claim the above I have hereunto subscribed my naine in the presence of two witnesses. 1 l

JOHN S. ANDERSON. Witnesses:

B. W. RICHARDSON, L. R. LAMB, Sr. 

